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(2012 XB112)
Classification: Apollo [NEO]          SPK-ID: 3620672
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446616815663616 2.238e-06  
a 1.028872048662195 9.1549e-07 au
q .8800336879860946 3.0236e-06 au
i 1.321887779123542 8.0807e-05 deg
node 76.87163645300973 0.00031499 deg
peri 88.82450869378403 0.00090157 deg
M 350.9186094949894 0.0020261 deg
tp 2459010.115908684013
(2020-Jun-09.61590868)
0.0021581 TDB
period 381.1891058241116
1.04
0.00050877
1.393e-06
d
yr
n .9444131390420988 1.2605e-06 deg/d
Q 1.177710409338295 1.0479e-06 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      3 days  
   first obs. used      2012-12-11  
   last obs. used      2012-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .42236  
   source      ORB  
   producer      Giorgini  
   solution date      2017-May-08 13:01:46  

Additional Information
 Earth MOID = .000795499 au 
 Jupiter MOID = 3.78811 au 
 T_jup = 5.937 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456274.5 (2012-Dec-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454375055408628 2.1759e-06  
q .8793577215223076 1.5753e-06 au
tp 2456344.856340490985
(2013-Feb-21.35634049)
9.955e-05 TDB
node 79.94111640130573 9.1399e-06 deg
peri 83.94715448957828 0.00011579 deg
i 2.376206942048092 4.3628e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      78  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      3 days  
   first obs. used      2012-12-11  
   last obs. used      2012-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .42236  
   source      ORB  
   producer      Giorgini  
   solution date      2017-May-08 13:01:46  

Additional Information
 Jupiter MOID = 3.78811 au 
 T_jup = 5.937 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.734489101845477E-12 -3.408886113156085E-12 -1.799514839695135E-10 7.854918686833372E-12 1.87651074289768E-10 9.068271606104607E-11
q -3.408886113156085E-12 2.481446757442523E-12 1.20461943854539E-10 -5.525112922948366E-12 -1.477450693105932E-10 -6.515994275812981E-11
tp -1.799514839695135E-10 1.20461943854539E-10 9.91027068846031E-9 -3.373701504720811E-10 -2.877312582250904E-9 -3.481087265499223E-9
node 7.854918686833372E-12 -5.525112922948366E-12 -3.373701504720811E-10 8.353772703864138E-11 1.85799547952573E-10 2.530487445437543E-10
peri 1.87651074289768E-10 -1.477450693105932E-10 -2.877312582250904E-9 1.85799547952573E-10 1.340760478733226E-8 3.440942124637557E-9
i 9.068271606104607E-11 -6.515994275812981E-11 -3.481087265499223E-9 2.530487445437543E-10 3.440942124637557E-9 1.903406876855377E-9

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 29.9   n/a MPO247345  
diameter diameter 0.0025 km 0.0005 n/a Based on Goldstone echo band-width of 3-4 Hz and light-curve rotational period of 2.6 minutes from light-curves.
rotation period rot_per 0.043333 h n/a n/a 2.6 minute rotation period from lightcurves by Bill Ryan

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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